commands: fix audio-delay property

SET simply didn't set the variable correctly.

Chain the property as generic option, so the property code will return
the correct type for the property, as well as implement the GET part.

1 files changed, 5 insertions, 3 deletions

diff --git a/command.c b/command.c
index e6295bc8a0..029b81a45f 100644
--- a/command.c
+++ b/command.c
@@ -579,15 +579,17 @@ static int mp_property_audio_delay(m_option_t *prop, int action,
 {
     if (!(mpctx->sh_audio && mpctx->sh_video))
         return M_PROPERTY_UNAVAILABLE;
+    float delay = audio_delay;
     switch (action) {
     case M_PROPERTY_PRINT:
-        *(char **)arg = format_delay(audio_delay);
+        *(char **)arg = format_delay(delay);
         return M_PROPERTY_OK;
     case M_PROPERTY_SET:
-        mpctx->delay -= audio_delay - *(float *)arg;
+        audio_delay = *(float *)arg;
+        mpctx->delay -= audio_delay - delay;
         return M_PROPERTY_OK;
     }
-    return M_PROPERTY_NOT_IMPLEMENTED;
+    return mp_property_generic_option(prop, action, arg, mpctx);
 }
 
 /// Audio codec tag (RO)